There is a small 3 pin header located on the top of the DZ68BC between the cpu fan header and the top middle mounting screw. This header is not shown on any of the board documentation. The mobo is version G30742-401 manufactured Sep. 20, 2011. Does anyone know what it is for?
That's a good question. I have the same board, 6 day later manufacture with the same header.
Probably either a test header or something left over from an earlier model using the same basic board.
I'd be interested to find out....